The Baster tube and injector tip are made from 18/8 stainless steel to be sturdy, durable and resistant to rust. The squeeze bulb is made from heat-resistant silicone (to 500-degrees Fahrenheit) with a safety grip that offers a secure grasp while keeping fingers away from hot contents. Simply squeeze the silicone bulb and submerge the tip of the tube into the basting liquid. Slowly release the bulb to draw in liquid. Reposition baster over the food and slowly squeeze the bulb to release the liquid. The injector tip adds layers of flavor below the surface and directly into the meat. It comfortably holds 2-ounces of broth, stock, au jus, marinade, glaze and more.